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Contract notice deadline calculator
The renewal date is not the date that constrains you. The notice deadline is — the last day you can tell a vendor you are leaving or renegotiating before the contract rolls over on its current terms. Enter two dates and this works it out.
Enter a renewal date and a notice period to see the deadline.
Calculated entirely in your browser. Nothing you type here is sent anywhere, stored, or logged.
What a notice deadline is
Most vendor contracts renew automatically unless you say otherwise, and they specify how far ahead that notice has to arrive — commonly 30, 60 or 90 days, sometimes expressed in months. The notice deadline is the renewal date minus that period. It is the last day your decision still counts.
The distinction matters because teams calendar the wrong date. A contract renewing on 15 March with a 60-day notice period has a deadline of 14 January. A reminder set for 15 March arrives two months after the window shut: at that point you are not negotiating, you are asking for a favor.
Months and days are not the same period
“Three months' notice” and “90 days' notice” produce different dates, and which one your contract says is worth reading twice. This calculator handles both. For month-based periods it clamps to the end of the shorter month — three months before 31 May is 28 February, not 3 March — because landing earlier is the safe direction to be wrong in.
Leap years and year boundaries are handled too. Sixty days before 1 March 2028 is 1 January 2028; the same subtraction in a common year lands a day later, because February is a day shorter.
What to do once you have the date
Put the deadline in a calendar, not the renewal date, and give it a reminder far enough ahead to act on. The .ics download above sets an alert a week before, which is enough to draft a notice but not enough to renegotiate — for anything you might want to renegotiate, work back another 60 to 90 days.
Then check how notice has to be delivered. Contracts frequently name a specific address or require written notice to a legal contact, and an email to your account manager may not satisfy the clause. Sending valid notice on time is two separate requirements, and teams usually only plan for the first.
If the answer above was that your deadline has already passed, ask anyway. Before a renewal invoice is paid you have more leverage than the contract implies, and a vendor weighing one concession against a resentful customer will sometimes release you.
Nothing you type here goes anywhere
The calculation runs in your browser. There is no request carrying your dates, no account, no email box, and nothing stored. That is a deliberate design choice rather than a feature: contract dates are commercially sensitive, and a tool that quietly posted them somewhere would not deserve to be used.
Tracking more than a handful of these by hand? The free renewal tracking template calculates this column for every row, and the guide to cancelling a SaaS contract covers what a valid notice actually has to contain.
Frequently asked questions
How do I calculate a contract notice deadline?
Subtract the notice period from the renewal date. A contract renewing on 15 March with a 60-day notice period has a deadline of 14 January. Where the contract states months rather than days, count back whole months and clamp to the end of a shorter month, which lands the deadline earlier rather than later.
Is the notice deadline the same as the renewal date?
No, and confusing the two is the expensive mistake. The renewal date is when the contract rolls over; the notice deadline is the last day you can prevent that. Anyone whose calendar reminder is set to the renewal date finds out about the decision after it has already been made for them.
Does this calculator send my contract dates anywhere?
No. The whole calculation runs in your browser, with no request carrying what you typed, no account, no email address and nothing stored. Contract dates are commercially sensitive, so the tool is built to need nothing from you and to keep nothing afterward.
What happens if the notice deadline has already passed?
The contract will renew on its current terms unless the vendor agrees otherwise, so ask them. Before the renewal invoice is paid you have more leverage than the clause implies, and a vendor weighing a single concession against a resentful customer will sometimes release you or shorten the term.
Can I add the deadline to my calendar?
Yes. The calculator produces a standard .ics file with an alert one week ahead, which imports into Google Calendar, Outlook, or Apple Calendar. Add it for the notice deadline rather than the renewal date, and set a second reminder earlier if the contract is one you might renegotiate.